Multipath static pure switching system and method during super high definition television broadcasting

Abstract

The invention relates to a multipath static pure switching system and method during super high definition television broadcasting. The system comprises a switching control console; the switching control console is connected with a one-in-four distributor composed of pure hardware; the one-in-four distributor are connected with four one-from-plurality switchers that at least more than two video signals can access; each one-from-plurality switcher is provided with a command capturing device, an anti-shake filtering device, an audio mute device, a switching line window capturing device and a video and audio signal switching device connected in sequence. According to the system and method provided by the invention, the switching is triggered by using the most concise signal such as the TTL level through using the characteristic of the programmable gate array of the one-from-plurality switcher by the way of simplifying the switching signal, and the complex switching process is simplified via measures such as preventing shake, being mute and capturing the line synchronization window, so that the splicing problem of splicing the four images into one super high definition image during thesuper high definition switching process is ingeniously solved, the super high definition multipath switching is achieved in an extremely switching manner, and the cost is reduced.

Description

technical field [0001] The present invention relates to a system and method for ultra-high-definition television broadcasting multi-channel static switching, which is a digital video processing system and method, and a digital video processing system and method for ultra-high-definition television broadcasting. Background technique [0002] 4K ultra-high-definition TV production and broadcasting technology itself is still in the initial stage, and there are still many technical problems that have not been well resolved in many links. In terms of production, broadcasting and transmission, it is still in the stage of perfection and exploration in multiple technical development directions. In terms of system architecture, both SDI and IP-based technologies are under development. IP technology standards vary with equipment manufacturers and cannot be fully compatible; 12G-SDI is a newly released technology and is still in the stage of improvement. Therefore, the current multi-tr...

AI Technical Summary

Problems solved by technology

[0002] 4K ultra-high-definition TV production and broadcasting technology itself is still in the initial stage, and there are still many technical problems that cannot be well solved in many links

For control commands transmitted through any protocol, whether it is a network control protocol or a serial port protocol, even if the consistency of the transmission link delay can be guaranteed, the time for the CPU to respond to the protocol and process the protocol after each device receives the command cannot be guaranteed completely. Consistent, resulting in the switching operations between devices cannot be fully synchronized

Therefore, it is difficult for this solution to ensure strict synchronization of the four-way switching, and the switching time differs by one frame, and the program difference can be clearly seen on the spliced ​​screen

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